agent-based

The term is a modern English compound, primarily emerging in the late 20th century within the fields of computer science and complex systems theory. The first element, 'agent', carries its core Latin meaning of 'one who acts', now abstracted to represent any autonomous decision-making unit in a model. The second element, 'based', signifies that the system's architecture or logic is fundamentally constructed upon these interacting agents. The compound elegantly captures the conceptual shift from top-down modeling to a bottom-up paradigm, where complex global patterns are not pre-programmed but 'emerge' from the localized rules governing individual agents.

Structure: agent (acting entity) + based (having as a foundation) - agent: From Latin agent- (stem of agens, 'one who acts'), present participle of agere ('to do, drive, lead, act'). In this compound, it functions as a noun used attributively to specify the type of entity. - based: From the past participle of the English verb base, meaning 'to establish, found, or set on a foundation'. It functions as an adjective-forming suffix indicating the fundamental principle or constituent.